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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_RENDERER_HOST_COMPOSITOR_IMPL_ANDROID_H_
#define CONTENT_BROWSER_RENDERER_HOST_COMPOSITOR_IMPL_ANDROID_H_
#include "base/basictypes.h"
#include "base/cancelable_callback.h"
#include "base/compiler_specific.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "cc/trees/layer_tree_host_client.h"
#include "cc/trees/layer_tree_host_single_thread_client.h"
#include "content/browser/android/ui_resource_provider_impl.h"
#include "content/browser/renderer_host/image_transport_factory_android.h"
#include "content/common/content_export.h"
#include "content/common/gpu/client/context_provider_command_buffer.h"
#include "content/public/browser/android/compositor.h"
#include "gpu/command_buffer/common/capabilities.h"
#include "third_party/khronos/GLES2/gl2.h"
#include "ui/base/android/system_ui_resource_manager.h"
#include "ui/base/android/window_android_compositor.h"
class SkBitmap;
struct ANativeWindow;
namespace cc {
class Layer;
class LayerTreeHost;
}
namespace content {
class CompositorClient;
class UIResourceProvider;
// -----------------------------------------------------------------------------
// Browser-side compositor that manages a tree of content and UI layers.
// -----------------------------------------------------------------------------
class CONTENT_EXPORT CompositorImpl
: public Compositor,
public cc::LayerTreeHostClient,
public cc::LayerTreeHostSingleThreadClient,
public ImageTransportFactoryAndroidObserver,
public ui::WindowAndroidCompositor {
public:
CompositorImpl(CompositorClient* client, gfx::NativeWindow root_window);
virtual ~CompositorImpl();
static bool IsInitialized();
// Creates a surface texture and returns a surface texture id. Returns -1 on
// failure.
static int CreateSurfaceTexture(int child_process_id);
// Destroy all surface textures associated with |child_process_id|.
static void DestroyAllSurfaceTextures(int child_process_id);
void PopulateGpuCapabilities(gpu::Capabilities gpu_capabilities);
private:
// Compositor implementation.
virtual void SetRootLayer(scoped_refptr<cc::Layer> root) OVERRIDE;
virtual void SetSurface(jobject surface) OVERRIDE;
virtual void SetVisible(bool visible) OVERRIDE;
virtual void setDeviceScaleFactor(float factor) OVERRIDE;
virtual void SetWindowBounds(const gfx::Size& size) OVERRIDE;
virtual void SetHasTransparentBackground(bool flag) OVERRIDE;
virtual void SetNeedsComposite() OVERRIDE;
virtual UIResourceProvider& GetUIResourceProvider() OVERRIDE;
// LayerTreeHostClient implementation.
virtual void WillBeginMainFrame(int frame_id) OVERRIDE {}
virtual void DidBeginMainFrame() OVERRIDE {}
virtual void BeginMainFrame(const cc::BeginFrameArgs& args) OVERRIDE {}
virtual void Layout() OVERRIDE;
virtual void ApplyViewportDeltas(
const gfx::Vector2d& inner_delta,
const gfx::Vector2d& outer_delta,
float page_scale,
float top_controls_delta) OVERRIDE {}
virtual void ApplyViewportDeltas(
const gfx::Vector2d& scroll_delta,
float page_scale,
float top_controls_delta) OVERRIDE {}
virtual void RequestNewOutputSurface(bool fallback) OVERRIDE;
virtual void DidInitializeOutputSurface() OVERRIDE {}
virtual void WillCommit() OVERRIDE {}
virtual void DidCommit() OVERRIDE;
virtual void DidCommitAndDrawFrame() OVERRIDE {}
virtual void DidCompleteSwapBuffers() OVERRIDE;
// LayerTreeHostSingleThreadClient implementation.
virtual void ScheduleComposite() OVERRIDE;
virtual void ScheduleAnimation() OVERRIDE;
virtual void DidPostSwapBuffers() OVERRIDE;
virtual void DidAbortSwapBuffers() OVERRIDE;
// ImageTransportFactoryAndroidObserver implementation.
virtual void OnLostResources() OVERRIDE;
// WindowAndroidCompositor implementation.
virtual void AttachLayerForReadback(scoped_refptr<cc::Layer> layer) OVERRIDE;
virtual void RequestCopyOfOutputOnRootLayer(
scoped_ptr<cc::CopyOutputRequest> request) OVERRIDE;
virtual void OnVSync(base::TimeTicks frame_time,
base::TimeDelta vsync_period) OVERRIDE;
virtual void SetNeedsAnimate() OVERRIDE;
virtual ui::SystemUIResourceManager& GetSystemUIResourceManager() OVERRIDE;
void SetWindowSurface(ANativeWindow* window);
enum CompositingTrigger {
DO_NOT_COMPOSITE,
COMPOSITE_IMMEDIATELY,
COMPOSITE_EVENTUALLY,
};
void PostComposite(CompositingTrigger trigger);
void Composite(CompositingTrigger trigger);
void CreateOutputSurface(bool fallback);
bool WillCompositeThisFrame() const {
return current_composite_task_ &&
!current_composite_task_->callback().is_null();
}
bool DidCompositeThisFrame() const {
return current_composite_task_ &&
current_composite_task_->callback().is_null();
}
bool WillComposite() const {
return WillCompositeThisFrame() ||
composite_on_vsync_trigger_ != DO_NOT_COMPOSITE;
}
void CancelComposite() {
DCHECK(WillComposite());
if (WillCompositeThisFrame())
current_composite_task_->Cancel();
current_composite_task_.reset();
composite_on_vsync_trigger_ = DO_NOT_COMPOSITE;
will_composite_immediately_ = false;
}
void OnGpuChannelEstablished();
// root_layer_ is the persistent internal root layer, while subroot_layer_
// is the one attached by the compositor client.
scoped_refptr<cc::Layer> root_layer_;
scoped_refptr<cc::Layer> subroot_layer_;
scoped_ptr<cc::LayerTreeHost> host_;
content::UIResourceProviderImpl ui_resource_provider_;
gfx::Size size_;
bool has_transparent_background_;
float device_scale_factor_;
ANativeWindow* window_;
int surface_id_;
CompositorClient* client_;
gfx::NativeWindow root_window_;
// Used locally to track whether a call to LTH::Composite() did result in
// a posted SwapBuffers().
bool did_post_swapbuffers_;
// Used locally to inhibit ScheduleComposite() during Layout().
bool ignore_schedule_composite_;
// Whether we need to composite in general because of any invalidation or
// explicit request.
bool needs_composite_;
// Whether we need to update animations on the next composite.
bool needs_animate_;
// Whether we posted a task and are about to composite.
bool will_composite_immediately_;
// How we should schedule Composite during the next vsync.
CompositingTrigger composite_on_vsync_trigger_;
// The Composite operation scheduled for the current vsync interval.
scoped_ptr<base::CancelableClosure> current_composite_task_;
// The number of SwapBuffer calls that have not returned and ACK'd from
// the GPU thread.
unsigned int pending_swapbuffers_;
base::TimeDelta vsync_period_;
base::TimeTicks last_vsync_;
base::WeakPtrFactory<CompositorImpl> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(CompositorImpl);
};
} // namespace content
#endif // CONTENT_BROWSER_RENDERER_HOST_COMPOSITOR_IMPL_ANDROID_H_
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